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Honeywell 200 Series - Selecting Magnetic Tape Addresses

Honeywell 200 Series
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3.
4.
SECTION
VII.
TYPES
204B-ll,
204B-12
MAGNETIC
TAPE
UNITS
stalled
PDT
instruction
by
turning
one
of
the
rotary
thumbwheel
TAPE
ADDRESS
switches
to
the
appropriate
position.
Re-enter
the
address
of
the
PDT
op
code
into
the
sequence
register.
Press
the
control
panel
RUN
button.
The
program
should
then
continue.
If
the
program
does
not
continue
and
the
operator
is
not
familiar
with
the
run,
a
restart
from
the
beginning
of
the
program
or
from
a
logical
restart
point
should
be
initiated.
Selecting
Magnetic
Tape
Addresses
If
a
program
is
reading
or
writing
on
a
tape
and
the
operator
wishes
to
select
another
tape
by
means
of
the
appropriate
TAPE
ADDRESS
switch,
he
must
be
aware
of
the
following
restric-
tion:
If,
while
a
TAPE
ADDRESS
switch
is
being
manipulated,
it
momentarily
passes
through
the
address
of
a
tape
that
is
being
read
or
written,
an
error
will
result.
To
avoid
this
situation,
the
operator
should
address
all
tapes
prior
to
starting
the
program.
If
a
situation
should
arise
later
that
requires
selecting
a
logical
tape
assignment
during
a
program
run,
the
operator
should
first
press
the
STOP
button
on
the
central
processor
control
panel,
dial
the
tape
assignment
in
the
appropriate
TAPE
ADDRESS
switch,
and
then
press
the
RUN
button
to
continue.
7-7

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